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2026-04-19 - 00:17
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Sat Apr 18, 2026 13:02:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3576899201191,8cyclictest0-21swapper/011:07:110
3576899201191,8cyclictest0-21swapper/011:07:100
3578899198189,5cyclictest3548-21CPU9
3578899198189,5cyclictest3548-21CPU9
3576899197189,6cyclictest0-21swapper/009:20:010
3576899197189,6cyclictest0-21swapper/009:20:000
3578899195186,4cyclictest2454-21CPU9
3578899195186,4cyclictest2454-21CPU9
3576899194187,5cyclictest0-21swapper/012:25:400
3576899194187,5cyclictest0-21swapper/012:25:390
3576899191186,3cyclictest0-21swapper/010:13:540
3576899191186,3cyclictest0-21swapper/010:13:540
3576899191184,4cyclictest0-21swapper/007:30:160
3576899189183,4cyclictest4398-21qemu-system-x8607:37:110
35791991881,87cyclictest0-21swapper/2010:35:1513
35791991881,87cyclictest0-21swapper/2010:35:1513
35791991881,87cyclictest0-21swapper/2010:35:1513
35791991881,183cyclictest4398-21qemu-system-x8608:00:2213
35791991881,183cyclictest4398-21qemu-system-x8608:00:2213
3580299187167,17cyclictest0-21swapper/3008:10:1024
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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